50MHz Cortex-M3 core with 256KB flash
The LM3S1918-EQC50-A2: This places it in the mid-range of Cortex-M3 performance — adequate for control loops, protocol bridging, and sensor fusion where the 50MHz ceiling sets the interrupt latency and throughput budget. On-chip memory consists of 256KB of flash and 64KB of SRAM. The 256KB flash holds a substantial firmware image including a real-time OS and communication stacks; the 64KB RAM leaves headroom for data buffers and stack frames in a typical control application.
Industrial temperature grade and peripheral set
The 2.25V to 2.75V supply rail is a narrow window — the board's 2.5V rail must be regulated within ±5% to keep the core powered correctly. Peripherals include 52 GPIOs, an 8-channel 10-bit ADC, and serial interfaces covering I²C, SPI, SSI, UART/USART, IrDA, and Microwire. The ADC resolution is 10-bit — adequate for monitoring analog signals like temperature or current sense where 0.1% accuracy is not required. On-chip brownout detect, POR, PWM, and WDT reduce external component count for reset supervision and timing.
100-LQFP package and board-fit
Housed in a 100-LQFP with a 14x14mm body, the package has a 0.5mm pitch that demands a 4-layer PCB for reliable fan-out of the inner rows.